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REMOVAL OF ZINC (II) FROM AQUEOUS SOLUTIONS BY ROMANIAN SPHAGNUM PEAT MOSS

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Angelica Kicsi*, Doina Bilba, Matei Macoveanu

Editorial: ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL, VOL 6, NR 3, MAY/JUNE 2007, p.205-209, 2007.

Rezumat:

In recent years the removal of toxic substances especially heavy metals from water and wastewater by using of non-conventional low-cost sorbents (industrial wastes and some natural material including microorganisms, plant-derived materials, agricultural products and by-products, mineral oxides, clays) has received much attention. In this paper efficiency of Zn (II) removal from aqueous solutions by sorption onto Romanian sphagnum moss peat was studied in batch experiments involving process parameters such as initial solution pH, concentration of metal ions and of peat sorbent, temperature solution and phases contact time. The sorption of Zn (II) is highest at pH 5.5, increases with peat dose and solution temperature and decreases with increase of concentration of solution; the required time for equilibrium establish is of maximum 2 hours. Therefore, use of sphagnum moss peat as potential sorbent for the removal of Zn (II) can be a promising alternative in the decontamination of aqueous effluents.

Cuvinte cheie: muschi de turba romanesc, zinc, sorptie // Romanian sphagnum moss peat, zinc, sorption, batch experiments